EndNote Online formerly EndNote Web is the online counterpart to EndNote desktop.
If you are using an EndNote Online account you will need to activate the X7 version from desktop EndNote. Go to Edit>Preferences>Sync>Enable Sync>OK (to update or create your two-year EndNote online account to get the latest features).
Go to https://www.myendnoteweb.com to access or sign up for an account.
For information regarding the use of EndNote Online please see the EndNote Online LibGuide or use the materials on this page.